Booster pump



May 22, 1934 D 1,959,817

BOOSTER PUMP Original Filed Feb. 28. 1931 2 Sheets-Sheet l u i 7 p I5 w7 [a 5 I2 14 6 I9 I I a.

' gmmwto'z QA LPH G- DEF/K R. G. DENK BOOSTER PUMP May 22, 1934.

Original Filed Feb. 28, 1931 2 Sheets-Sheet 2 Fla. 4

gmn'ntot RALPH G. DE/YK Patented May 22, 1934 UNITED STATES BOOSTER PUMPRalph G. Denk, Peru, Ind.

Application February 28, 1931, Serial No. 519,232 Renewed December 6,1933 2 Claims.

This invention relates to booster means for hot water heating systemsand one feature of the device isthe provision of a structure whereby thecirculation of the water will be uniform throughout the entire system.

A further feature of the invention is the provision of a booster meanswhereby a plurality of return pipes may be connected with a singlebooster or pump structure.

A further feature of the invention is the provision of means forpositively directing the flow of the water as it passes through thebooster device.

A further feature of the invention is in so arranging the boostermechanism that a positive circulation will result without increasing theboiler pressure.

A further feature of the invention is the provision of means for somounting the motor em- 29 played in connection with the boostermechanism that vibration will be eliminated.

A further feature of the invention is the provision of means fordirecting water through bearings associated with the device andproviding a water bearing.

Other objects and advantages will be hereinafter more fully set forthand pointed out in the accompanying specification.

In the accompanying drawings which are made a part of this application,

Figure 1 is a side elevation of the booster mechanism.

Figure 2 is a sectional view thereof as seen along line 2-2, Fig. 1.

Figure 3 is a vertical transverse sectional view as seen along line 3-3,Fig. 2.

Figure 4 is a similar view as seen from line 4-4, Fig. 2.

Figure 5 is an elevation of the boiler portion of a heating plant withthe booster mechanism attached thereto.

Figure 6 is an elevation of a modified form of booster mechanism, and,

Figure '7 is an elevation of still a different form of boostermechanism.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the several views, the numeral 1designates the conventional form of water heating boiler, with which areassociated water conveying pipes 2, which pipes extend to and areconnected with conventional radiators (not shown).

In heating plants of this nature it is customary to depend on the heatedwater to replace the cooler water and cause the cooler water to returnby gravity to the boiler structure 1, but as some of the radiators areat a higher elevation than others and at a greater distance from theboiler than others, the flow of the water in some of the pipes is moresluggish than in others, thus creating a greater degree of heat in someof the radiators than in others.

To overcome these objectionable features and cause substantially thesame degree of heat in all the radiators, at whatever distance from, orat whatever elevation they may be with respect to, the boiler, a drum orpump casing 3 is provided, said drum having ports 4 through the wallthereof, to which the return pipes 2 are connected. Within the drum 3 isa booster impeller structure 5, which creates a suction through thepipes 2 and returns the water into the boiler 1 through a coupling 6,said impeller structure being carried by a shaft 7, extending throughone end of the drum, the impeller structure 5 being preferably mountedWithin the coupling 6 and beyond the drum 3.

As the impeller structure 5 is positioned at one side of the flow ofthcwater on entering the drum' 3, a deflector 8 is extended inwardly fromone head wall 9 of the drum, said deflector being tapered from its pointof connection with the head 9 to the opposite end thereof, theperipheral face of the deflector having a plurality of spaced wings 10extending from end to end thereof, the wings preventing the water fromone pipe 2 from passing directly through the drum into a pipe 2 at theopposite side of the drum, while the tapered faces of the deflector 8will cause the Water discharging from the several pipes 2 to traveltoward the coupling 6.

The shaft 7 extends through suitable bearings 11 and 12 and has thrustbearings 13 and 14 associated therewith, the outer end of the shaft 7being connected to a motor 15, through the medium of which the shaft 7and impeller structure 5 are driven.

The motor 15 is mounted on a base 16, to which the booster element isalso attached, a plate of wood 1'? or the like being introduced betweenthe motor and base; and in order to eliminate undue vibration of themotor, a section of rubber 18 or similar resilient material is enteredbetween the plate of wood 17, and the base 16, While Washers 19 ofrubber or similar material are introduced between the feet of the motorand the plate 1'7. The plate 17 is secured to the base 16 by extendingscrews 20 or the like through the base 16 and interposed section ofrubber 18, into the plate 17; while the motor is secured to the plate1'7 by extending bolts 21 through the feet of the motor, interposedwashers 19 and plate 17.

In order to provide a Water bearing for the shaft '7, a bolt 22 or thelike is extended transversely through the shaft 7, with a head 23 ateach end thereof so that as said shaft is rotated, said heads will setup a suction in the cavity 24 and draw water through slots 25 in thebearing 11, such water being in turn expelled from the cavity 24 throughbores 26 in the deflector 8.

In Figs. 6 and '7, different forms of booster pumps are shown, thesestructures being provided with heads 27, into which the return water isentered through pipes 2 and said heads are so arranged that any numberof the return pipes 2 may be connected therewith.

While the description and drawings illustrate in a general way certaininstrumentalities which may beaemployed'in carrying the invention intoeffect, it is evident that many modifications may be madein the variousdetails without departing. from the scope of the appended claims, itbeing understood that the invention is not restricted to the particularexamples herein described.

What I claim is:

1. A fluid impelling mechanism having a casing, a journal wall at oneend of said casing, an outlet structure at the other end of said casing,a shaft bearing in said journal wall disposed centrally of the casing,inlets in said casing directed radially towards said shaft, an impellermounted on said shaft within said casing, serving to draw fluid throughthe casing from said inlets, a journal boss carried by said journalwall, said boss extending inwardly into the path of the fluid coming infrom the inlets and serving to guide same to said outlet structure, ajournal in the end of said boss for supporting said shaft, fluidcommunications extending from the interior of said casing longitudinallythrough said journal and said boss, other communications uniting withand transverse to the first mentioned communications between saidjournal wall and said journal and passing through said boss transverselyto the axial center thereof, transverse extensions on said shaft servingto propel fluid through said communications in the opposite direction tothe movement of fluid created by said impeller, said extensions beingwithin said boss in the line of said communications, whereby part of thefluid drawn into said inlets and through said casing by said impellerwill enter said journal at the end of said boss and movecontradirectional to the other fluid passing through said casing and ijoin the incoming stream of fluid, between said journal and said journalwall.

2. A fluid impelling mechanism having a casing, a journal wall at oneend of said casing, an outlet structure at the other end of said casing,a shaft bearing in said journal wall disposed centrally of the casing,inlets in said casing directed radially towards said shaft, an impellermounted on said shaft within said casing, serving to draw fluid throughthe casing from said inlets, a journal boss carried by said journalwall, said boss extending inwardly into the path of the fluid coming infrom the inlets and serving to guide same to said outlet structure, ajournal in the end of said boss for supporting said shaft, a fluidcommunication extending from said journal to said bearing, anothercommunication uniting with the first mentioned communication andterminating through the surface of said journal boss between saidjournal wall and said journal, transverse extensions on said shaftserving to propel fluid through said communications in the oppositedirection to the movement of fluid created by said impeller, saidextensions being rotated within said boss through the line of both ofsaid communications, whereby the fluid drawn into said inlets andthrough said casing by said impeller which enters said journal will movethrough the second mentioned communication contradirectional to theother fluid passing through said casing and join the incoming stream offluid, between said journal and said journal wall, and be thussufliciently diverted from said bearing to prevent leakage through same.

7 RALPH G. DENK.

